- YIMBY Praha, z.s.
- YMCA Plzeň, z. s.
- Yacht Club BER Slezská Harta o.s.
- YFU CZ, z.s.
- Yachtmeni, z.s.
- YACHT CLUB MILEŠOV z.s.
- YAMAMOTO Czech z.s.
- Yoga Slavičín, z.s.
- YACHT CLUB FRYMBURK
- Yacht Club Skochovice
- Yacht Club Vlhká plachta, z.s.
- you connected, z.s.
- YWCA v České republice v likvidaci
- Young Leaders CZ z.s.
- Young Initiative z.s.
- YERBABUENATEAM
- Yacht club Krnov z.s.
- Yachtclub Jinočany, z.s.
- Yankee and Confederate Artillery Club Y.A.K.A.C.
- Young snipers team, z.s. "v likvidaci"
- Youth and Environment Europe Czech Republic
- YMCA v České republice
- Yoga House, z.s.
- YACHT CLUB Chrášťany z.s.
- Y. C. Zlín v likvidaci
- YMCA Neveklov "v likvidaci"
- YAKSHA GYM PLZEŇ z.s.
- Yvonne Lombardo
- Yellow Sisters z. s.
- Yogadana, z.s.
- Yettey v likvidaci
- Yoga retreat club z.s.
- Youth for Youth, z.s.
- Yacht Club Actinet v likvidaci
- Ýpsilon
- Yobi Take Puraha Shakuhachi Collegium z.s.
- Yves Nice
- Youth Prague z.s.
- Yacht club Letovice
- Youth4Ova, z.s.
- YMCA Děčín
- Yacht club ČSA, v likvidaci
- YACHT CLUB BOHEMIA z. s.
- Yvajuk z. s.
- Yetti Club Trutnov z. s.
- Youth Business Network
- Yacht club Slezská Harta z.s.
- Yacht Club Poseidon Praha z. s.
- Yacht Club DRAGON 77
- YWAM ČR z.s.